Road scraping, grading, and ditching machine



G. R. COOK.

Patented Apr. 12, 1921.

2 SHEETSSHEET l- Chicano/1 G. R. COOK. ROAD SCRAPING, GRADING, ANDDITCHING MACHINE.

APPLICATION FILED AUG-Z. I919.

Patented Apr. 12, 1921. 2 SHEETS-SHEET 2- Qi g. ,2.

M/W MM dimensions desired.

UNITED S ATES P ATEN QOFF C enoReR R. oooiiflor cARRoLLroN, GEORGIA,AssIenoRor oNR nALR'ro AL'oNzo'o. TURNER Ann ONE-HALF T0 JAMES B. r.DIAL, BOTH'O'F CARROLLTQN, GEORGIA.

RoAn soRArrnefGRAnINe, Ann .nrromnefmncnmn 1 To all 'w/wm may concern: 7I

Be it known that' I, GEORGE COOK, a citizen of the United States,residing at Carrollton, in the countyof Carroll and "State of Georgia,have invented new and useful Improvementsin Road Scraping, Gradlng,

This invention relates to roadscraping, grading and ditchingmachines,,and consists essentially of features of improvement based onthe structure of the machine disclosed .b m Patent No..1,265,702, datedMay 7, v 1918, and which will be more fully hereinafter describedandclaiined. The main object ofthe invention sto generally improve thisparticular type of machine in such manner as to more effec tivelyperform the operations .ofroad scraping, grading and ditching; toincrease the strength and durability ofthe machine and provide for moreconvenient and expeditious assemblage of the parts, particularly thoseconnecting the share or blade and the runner: or slide. A further objectof the invention is toprovide' an adjustable attachment in connectionwith therearend of'the share or mold board for the purposeof making saidshare or mold board quickly shed dirt or soil andalso to facilitate theformation of terraces of any shape and In the drawings r I Figure 1 is aperspective view of a machine embodying the featuresof the invention. v

Fig. 2 is a top planfview of the improved machine. s j j Fig. 3 is-atransverse vertical section taken in the plane of the line 3'3, -.Fig.2. Fig; 4: is a transverse iverticalsection taken in the plane oftheline44c, Fig. 2.

Fig; 5 is, aldetailperspective view of a As in my patented machinehereinbefore which serves as a mold board,- a runneror slide 6 and adraftbar f Th e. shareior I nold board 5 has a concave-convex contour incross section with t'he concave side8 1out-- side, This shareor moldboard 5 hasupper and lower similar straight edges9 and 10 Applicationfiled August 2, 1919. Serial No. 314,34

and also'upper and lower points 11 and 12 Specification of LettersPatent. Patnted 12,1921, 8

which are adapted to serve as cutting means and project beyond or inadvance of the front end of the share ormold board with an interveningclear space 13 between them, the said points 11 and 12 beingconcavoandDitching Machines, of which the follow- Y convex in cross sectionalcontour and removing is a specification.

ably boltdto the mold board, as at 14. The I 'sllde 6' is verticallystraight with upper and lower similar longitudinally straight workingedges 15 and 16. Thefrontend or the SlIdG'lS-IOllGd to form knucklesorcuffs 17 I which are disposed between upper and lower angle brackets 18securedfto. the inner side ofthe front extremity 'ofithe mold board 5,an d extending through the said brackets and lniuckles or cuffs 17 is apintle bolt 19 to form va hinge connection between the front ends ofthemold board and slide. By I {HQ/(111$ ofthe hinge connectlonust-explained y r the moldboard 5 maybeadjusted as desired relativelytothe slide 6, and tomaintain: the

adjustment of the mold board the inner side of the slide has alongitudinally disposed keeper bar 20' secured thereto by angle brackets21,.said barbeing provided with plurality of openings '22, therein toadjustably receive aqcoupling bolt 23 inserted through the end of aconnecting rod or bar 24 which is. attached to r the slide ,6 in asjmanner presentlyexplained.

The draft bar 7 preferably consists of a asdesired. The inner end of thedraft bar has a klluckleor cuff 26 which is attached to the center ofthe pintlej-bolt 19between the knuckles or cuffs 18 at the front endofthe Slide 6. The bar 7 extends horizontally. outwardfrom the pintle bolt19, or the front hinged ends of the mold board and slide, and 7tothe'outer end thereof a draft rod 27 isse- I cured: and extends,rearwardly and curves: g I around and atja distance fromtherear endmentioned the essential components or the improvedmachine are a share orblade 5 of the mold board 5 and then projects forwardly and inwardlytoward and secured to the saidmold board in'a preferred particularmanner; The rod 27 fully clears the [outer concave 'workingfside of themold board 5 as well as the rear end 'ofthe latter and does not intheleast interferewith the movementof the orsoil over the mold board. Thedraft rod 27 transmits the draft pull to and operates to steady the moldboard and reliably and positively holds the same upto the work, andthereby an advantageous guiding and truing action ensues when a cut ismade by the cutting points 11 and 12.

Oneof the special features of improvement consists of an arch or bridgebracket 28 secured to and extending vertically relatively to the innerside of the mold board 5. The end of the connecting rod or bar 24:opposite that adjustably engaging the keeper bar 20 is bifurcatedorformed with a fork 29, and the members of this'fork respec-- tivelypartially embrace and are pivoted to the members of the bracket 28 andare free to move on the latter which serves as a fulcrum projection. Thedraftrod 27 extends through thefork 29 and is preferably secured to thecenter or apex of the bridge or arch bracket 28 by a suitable clip oranalogous device 30, the said rod 27 continuing in advance of thebracket 28 and riveted or bolted to the mold board 5 as at 31. Thisparticular attached association of therod 27 with the mold board 5results in an effective distribution of the sustaining and draftfunctions of the said rod relatively to the mold board.

A further special feature of improvement in the present machine consistsof an adjustable wheel or roller attachment at the rear extremity of themold board 5 to facilitate shedding of dirt or soil by said board andprovide for the formation of terraces of any shape desired, either highor low and narrow or wide. This attachment comprises a vertical guide 32securedto the mold board 5 and having upper and lower set screws 33.Slidably mounted in the guide 32 are two reversely arranged shanks orstems 34; and 35 respectively carryin a wheel or roller 36 and 37 toproject a ove and below the upper and lower edgesof the mold board. Byloosening the adjusting screws 33 the shanks or stems 34 and 35 withtheir wheels or rollers 36 and 37 may be raised or lowered and set inthe adjusted position desired by tightening the saidscrews.

The improved machine may be overturned or reversed bodily by detachingthe draft of the latter, the said strips curving outwardly from theshare or blade edges and having a slight yielding action. These dragsoperate similarlyto the wheels or rollers, or, have a like function.What is claimed as new is 1. A road scraping, grading and ditchingmachine comprising a mold board provided with upper and lower cuttingpoints at its front end and with a bridge bracket at the inner side ofits rear end, a slide hinged at itsfront end to the similar end of themold board, the mold board and slide bothhaving upper and lower workingedges to render the samereversible, a draft bar connected to the frontextremities of the mold board and slide. and a draft rod secured to theouter end of the draft bar and extending around the, rear end ofthe moldboard and secured to the said bridge bracket and the mold board inadvance of the bracket.

2. A road scraping, grading and ditching machine comprising a mold boardprovided with upper and lower cutting points at its front end and with abridge bracket at the inner side of its rear end, a slide hinged at itsfront end to the similar end of the mold board, the mold board and slideboth having upper and lower working edges to render the same reversible,a longitudinal keeper bar secured to the inner side of the slide, aconnecting rod having a bifurcated end pivoted to the bridge bracket andadjustably attached to the keeper bar, a draft bar connected to thefront extremities of the mold board andslide, and a draft rod secured tothe draft bar and extending around the rear end of the mold board andthrough the bifurcated end of the connecting rod, the draft rod beingsecured to the bridge bracket.

3. A road scraping, grading and ditching machine comprising a mold boardprovided with upper and lower cutting points at its front end and with abridge bracket at the inner side of its rear end, a slide hinged at itsfront end to the similar end of the mold board, the mold board and slideboth having upper and lower working edges to render the same reversible,a longitudinal keeper bar secured to the inner side of the slide, aconnecting rod having a bifurcated end pivoted to the bridge bracket andad justably attached to the keeper bar, a draft bar connected to thefront extremities of the mold board and slide, and a draft rod securedto the outer end ofthe draft bar and 7 extending around the rear end ofthe-mold board and secured to the said bridge bracket and the mold boardin advance of the bracket.

l. A road scraping, grading and ditching machine, comprising a moldboard provided 'samereversible, means adjustably connecting the saidmold board and slide, the inner side of the rear extremity ofthemoldbo'ard being provided with a bracket, and vertically disposedstems reversely and adjustably engaging the said bracket and havingwheels in their opposite ends projecting above and belowthe upper andlower edges of the mold board, each wheel and its stem being adjustableindependently'of the re-i maining wheel and stem to vary the projections of the wheels above and below the upper and lower edges of themold board,

the machine being bodily overturned in re'-- versing the same withoutdetaching or reversing the mold board or slide.

- 5. A road scraping, grading and ditching machine comprising a moldboard provided with upper and lowercutting pointsvat its front end andwith abridge bracket at the inner side of its rear end, a slide hinged iat its front end to the similar end of the 1 mold board, the mold boardand slidefboth having upper and lower working edges to render the samereversible, upper andlower vertically adjustable wheels at the innerside of the rear extremity of said mold board, a

draft bar connected to the front extremities of the mold board andslide, and a draft rod secured to the outer end of the draft bar andextending'around the rear end of Vance of the bracket. 1 6; A roadscraping, grading and ditching machine, comprising a mold board havingupper and lower cuttlng oints at its front end and also provided witupper and lower cutting edges extending the full length the mold boardand secured to the said bridge bracket and the mold, board in ad-,

thereof, a slide hinged at its front end to V the similar end of themold board and also having upper and lower working edges ex tending thefull length thereof, and means carried by, the mold board at the rearextremity of the latter and having uniform projection above and belowthe upper. and

lower cutting edges of the mold board for instant use and servicewithout adjustment when the machine is reversed by bodily overturningthe same to facilitate shedding of dirt by the mold board and providefor the formation of terracesowithout requiring rearrangement andreadjustment of any part of the machine.

In testimony whereof I have hereunto set i I my hand in presence of twosubscribing witnesses. r

I GEORGE R. COOK. Witnesses:

O. S; MILLER,

F. M.TUR NER,

